﻿/*
 *  Copyright (c) 2009 Alessandro Pilotti
 *
 *  Permission is hereby granted, free of charge, to any person
 *  obtaining a copy of this software and associated documentation
 *  files (the "Software"), to deal in the Software without
 *  restriction, including without limitation the rights to use,
 *  copy, modify, merge, publish, distribute, sublicense, and/or sell
 *  copies of the Software, and to permit persons to whom the
 *  Software is furnished to do so, subject to the following
 *  conditions:
 *  
 *  The above copyright notice and this permission notice shall be
 *  included in all copies or substantial portions of the Software.
 *  
 *  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 *  EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 *  OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 *  NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 *  HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 *  WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 *  FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 *  OTHER DEALINGS IN THE SOFTWARE.
 */

using System.Collections.Generic;

namespace AlexPilotti.KeyStorageManager
{
    public class KeyStorageManager
    {
        private KeyStorageManager()
        {
        }

        /// <summary>
        /// Creates and returns an istance of the KeyStorageProvider available for the current platform.
        /// </summary>
        /// <returns></returns>
        public static IKeyStorageProvider GetProvider()
        {
            IList<IKeyStorageProviderManager> providerManagers = new List<IKeyStorageProviderManager>();
            providerManagers.Add(new DPAPIXmlKeyStorageProviderManager());
            providerManagers.Add(new GnomeKeyringProviderManager());
            providerManagers.Add(new MacOSXKeychainProviderManager());

            IKeyStorageProvider provider = null;

            // Returns the first available provider
            foreach (IKeyStorageProviderManager providerManager in providerManagers)
                if (providerManager.IsAvailable)
                {
                    provider = providerManager.GetProviderInstance();
                    break;
                }

            return provider;
        }
    }
}
